North Yorkshire Fire and Rescue say they have specialist hazardous materials officers in attendance at the Outswood Academy in Ripon.
A spokesperson for North Yorkshire Fire and Rescue said:
North Yorkshire Fire and Rescue Service received a call at 12:21 to reports of a number of pupils feeling unwell at the Outwood Academy in Ripon.
Crews from Ripon and Boroughbridge are at the scene alongside Hazardous Materials Specialist Officers. A specialist detection, identification and monitoring (DIM) team from West Yorkshire Fire and Rescue Service is also at the incident.
A number of students have been affected who have displayed signs of sickness and feeling faint. Some have been attended to by paramedics at the scene and others have been taken to hospital.
We are working with colleagues from North Yorkshire Police and Yorkshire Ambulance Service at this time to determine what has caused this occurrence.
